The Siemens SITAS 4AM5242-5AT10-0FA0 is a 630 VA single-phase control transformer that steps down 400 V primary to 230 V secondary for industrial control circuits. With screw/tab terminals for secure standard wiring, it delivers 2.74 A continuous with 2350 VA short-term capacity — reliably powering contactor coils, relays, timers, and PLC power supplies in automation panels and machine control systems.

Key Features

• Screw/tab terminals provide robust, maintenance-friendly connections compatible with standard ring and fork lugs
• Adjustable primary voltage taps at 380/400/420 V (±5%) compensate for supply voltage fluctuations
• 2350 VA short-term capacity (3.7× nominal) handles high inrush from contactor coils and relay banks
• Low inrush current design simplifies primary-side protection coordination
• Compact EI 150/48 core: 152 × 144 × 110 mm footprint
• 50/60 Hz dual-frequency operation for global industrial power compatibility
• IP00 open-type construction for enclosed panel or cabinet mounting

Technical Data

Applications

This transformer is designed for supplying control circuits in industrial machinery, control panels, HVAC systems, and building automation where a 630 VA single-phase supply is required. The screw/tab terminals are compatible with standard industrial wiring practices, while the compact EI 150/48 footprint fits standard control panel layouts. The ±5% adjustable primary taps provide adaptability for installations with fluctuating mains voltage, and the 2350 VA S6 rating handles inrush currents from contactor and relay loads.